Update API key references from GOOGLE to GEMINI

Author: aditya452007

packages/memory/llm/providers/gemini.py

@@ -29,10 +29,10 @@ def __init__(
         super().__init__(model=model, temperature=temperature, max_tokens=max_tokens)
 
         # 2. Auth: Try settings first, then fallback to OS environment
-        self.api_key = api_key or getattr(settings, "GOOGLE_API_KEY", None) or os.getenv("GOOGLE_API_KEY")
+        self.api_key = api_key or getattr(settings, "GEMINI_API_KEY", None) or os.getenv("GEMINI_API_KEY")
 
         if not self.api_key:
-            raise ValueError("GOOGLE_API_KEY is missing. Please add it to your .env file.")
+            raise ValueError("GEMINI_API_KEY is missing. Please add it to your .env file.")
 
     def get_provider_name(self) -> str:
         return "gemini"
@@ -85,4 +85,4 @@ def stream_text(self, prompt: str, system_prompt: Optional[str] = None) -> Itera
         Stream text using Gemini (Simplified to non-streaming for stability first).
         """
         # For the initial setup, we simply yield the full result to avoid async complexities
-        yield self.generate_text(prompt, system_prompt)
+        yield self.generate_text(prompt, system_prompt)